The question makes no sense, because the response time depends on many factors.
The protocols you are using with WFC have nothing to do with ping (ICMP,
https://en.wikipedia.org/wiki/Internet_Control_Message_Protocol[
^]), so the time correlation you can see is pure imaginary, nothing but a coincidence. By the way, try to repeat your timing several time, chances are, you will see great statistic dispersion.
—SA